确保通知单包装

时间:2012-07-22 18:06:23

标签: android android-notifications

我有一个有趣的(至少对我而言)问题:

我有一个通知,我会根据需要在我的应用中弹出。一切都在我的Galaxy S II上很棒(史诗般的冲刺4g,因为那里有不同型号的S II,我觉得我需要具体),并且通知词包装没有问题 - 例如:< / p>

this is a notification, but it's too long, 
so it'll show this second line on it's own.

令我恐惧的是,我意识到有些Android手机没有自动换行,实际上只是在屏幕末尾剪切我的通知,所以上面的消息会显示为:

this is a notification, but it's too long, 
显然,这不行。那么,我该怎样做才能确保整个消息始终显示出来?

1 个答案:

答案 0 :(得分:0)

<强>重写

正如我们之前讨论过的那样,你想强制Notifcation的tickerText进行自动换行。一种方法是将文本分成适当长度的行,并为每个行发送通知:

public class Example extends Activity {
    public class AlarmReceiver extends BroadcastReceiver {
        @Override
        public void onReceive(Context context, Intent intent) {
            Log.v("Example", "Alarm received");
            sendNotification();
        }
    }

    AlarmManager alarmManager;
    NotificationManager notificationManager;

    AlarmReceiver alarmReceiver = new AlarmReceiver();
    Notification notification = new Notification(); 
    Intent notificationIntent;
    PendingIntent pendingIntent;
    int tickerIndex = 0;
    List<String> tickerTexts = new ArrayList<String>();

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
        notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

        // Determine the screen width and density, split tickerText appropriately
        String tickerText = "A tickerText that is long enough to cause a word wrap in portrait.";
        tickerTexts.add(tickerText.substring(0, 35));
        tickerTexts.add(tickerText.substring(35));

        notificationIntent = new Intent(this, Example.class);
        pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);

        notification.flags = Notification.FLAG_ONLY_ALERT_ONCE;
        notification.icon = android.R.drawable.star_on;

        sendNotification();
        registerReceiver(alarmReceiver, new IntentFilter("Generic"));
    }

    @Override
    protected void onDestroy() {
        unregisterReceiver(alarmReceiver);
        super.onDestroy();
    }

    public void sendNotification() {
        Log.v("Example", "Send Notification " + tickerIndex);

        notification.tickerText = tickerTexts.get(tickerIndex);
        notification.setLatestEventInfo(this, "Title", "Text " + tickerIndex, pendingIntent);
        notificationManager.cancel(0);
        notificationManager.notify(0, notification);

        tickerIndex++;
        if(tickerIndex < tickerTexts.size()) {
            Log.v("Example", "Setting up alarm");
            PendingIntent alarmPending = PendingIntent.getBroadcast(this, 0, new Intent("Generic"), 0);
            alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, SystemClock.elapsedRealtime() + 1000, alarmPending);
        }
    }
}

但是你可以看到我跳过设置的一个组成部分:我假设文本的长度适合,我没有计算它。为了确定合适的断点,您需要计算屏幕的宽度,字体的缩放大小和密度。您还需要考虑“!!!”的事实可能比“www”更短,具体取决于字体,用户可以在横向和纵向之间切换......您可以在源代码中查看通用Android如何分解tickerText。

无论如何,强制tickerText进行自动换行可能比缩小原始字符串或向“非包装”手机制造商发送愤怒的字母更复杂。